Could I use my 1/2" webbing as a makeshift compression strap for my rucksack? I use a variety of stuffsacks to loose pack my rucksack, but because the backpack itself is pretty light on compression straps it doesn't compress the total volume down all that evenly - the pack sort of puffs out in the middle.

Think I can use my straps with some sort of friction slipknot to squeeze in my packs gut?